exit and unmount ??

[timbod7]

Nice library! I'm using it in a small project.

I'd like my filesystem to unmount itself under certain circumstances - any suggestions on how this can be done with the current API?

[m15k]

Can you give a specific example of what you are trying to do?

On Oct 20, 2016 4:41 PM, "Tim Docker" [email protected] wrote:

Nice library! I'm using it in a small project
https://github.com/timbod7/secretfs.

I'd like my filesystem to unmount itself under certain circumstances - any
suggestions on how this can be done with the current API?

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[timbod7]

I'd like to set things up such that if no requests were received within a given time, the FUSE file system would unmount it self, and the process would exit.

[m15k]

That would certainly be possible, though outside the scope of hfuse. You
are looking for something like machines or conduit. Or perhaps more simply
using bracket from Control.Exception?

On Tue, Oct 25, 2016 at 2:44 PM, Tim Docker [email protected]
wrote:

I'd like to set things up such that if no requests were received within a
given time, the FUSE file system would unmount it self, and the process
would exit.

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[timbod7]

I don't understand what you are suggesting wrt to bracket, machines, or conduit. I start hfuse with a call to

fuseMain :: Exception e => FuseOperations fh -> (e -> IO Errno) -> IO ()

What should I call to shutdown the process?

[m15k]

Haven't forgotten about you, will get a chance to look at this, this
weekend.

On Wed, Oct 26, 2016 at 3:51 PM, Tim Docker [email protected]
wrote:

I don't understand what you are suggesting wrt to bracket, machines, or
conduie. I start hfuse with a call to

fuseMain :: Exception e => FuseOperations fh -> (e -> IO Errno) -> IO ()

What should I call to shutdown the process?

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[plredmond]

I encountered this same issue (inability to cleanly un-mount programmatically). The work-around that I came up with was to call fusermount -u on the value of the mountpoint argument.

Proc.callProcess "fusermount" ["-u", mountpoint]

This is inelegant (call to an external program) and error prone (it fails if called while fuse is busy or called from the same thread as is executing a fuse callback, such as, from within the fuseInit function). It works if you call it from another thread, such as from Control.Concurrent.forkIO. It doesn't always work on the first try, however, and so you need to take care to catch exceptions, and retry, until successful.

A programmatic solution would be desirable. Perhaps fuseMainInline or fuseRunInline can be used to have more control?